English is a global language, spoken by hundreds of million of people all over the world, both as a first and as a second language and it is used in various fields, such as business, medicine, science, academic, journalism, literature, diplomacy, modern technology, etc. So, nowadays, it is necessary not only to speak good English, but also to have language certificates, in order to enter a University, to gain scholarships, to have a good job and a good position in the society. Also, it is very useful when travelling abroad and when using social networks and modern gadgets. Teaching English as a foreign language is not easy, because it implies a lot of patience and communicational skills, especially when dealing with young learners and teenagers, at different levels. As an English teacher it is very important to create a safe and supportive environment, use many visual supports, make fun lessons, set classroom rules, use different learning techniques and use modern technology. As a primary, lower intermediate and technological high-school teacher, vocabulary has been a challenge for me, because I have been trying, for ten years, to find and use the best strategies and methods for my students to learn English as easy and as fun as possible, although many times it can be quite difficult to keep them motivated and involve them actively in the learning process.